Unit Start−Up
FOR YOUR SAFETY READ BEFORE LIGHTING
WARNING
Do not use this furnace if any part has been under water. A flood−damaged furnace is extremely dan- gerous. Attempts to use the furnace can result in fire or explosion. A qualified service agency should be contacted to inspect the furnace and to replace all gas controls, control system parts, elec- trical parts that have been wet or the furnace if deemed necessary.
WARNING
Danger of explosion. Can cause injury or product or property damage. Should the gas supply fail to shut off or if overheating occurs, shut off the gas valve to the furnace before shutting off the electrical supply.
WARNING
SMOKE POTENTIAL
The heat exchanger in this unit could be a source of smoke on initial firing. Take precautions with respect to building occupants and property. Vent initial sup- ply air outside when possible.
WARNING
Electric shock hazard. Can cause injury or death. Before attempting to perform any service or maintenance, turn the electrical power to unit OFF at disconnect switch(es). Unit may have multiple power supplies.
WARNING
Danger of explosion. Can cause injury or death. Do not attempt to light manually. Unit has a direct spark ignition system.
BEFORE LIGHTING smell all around the appliance area for gas. Be sure to smell next to the floor because some gas is heavier than air and will settle on the floor.
Use only your hand to push in or turn the gas control knob. Never use tools. If the knob will not push in or turn by hand, do not try to repair it, call a qualified service technician. Force or attempted repair may result in a fire or explosion.
Placing Furnace Into Operation
G24−200 units are equipped with two direct spark ignition systems − one for each heat section. Do not attempt to manually light burners on these furnaces. Each time ther- mostat calls for heat, the burners will automatically light.
WARNING
Danger of explosion and fire. Can cause injury or product or property damage. You must follow these instructions exactly.
Gas Valve Operation − White Rodgers 36E
1 − Set the thermostat to the lowest setting.
2 − Turn off all electrical power to the unit.
3 − This furnace is equipped with an ignition device which automatically lights the burners. Do not try to light the burners by hand.
4 − Remove the control access panels.
WHITE RODGERS 36E GAS VALVE
LOW HEAT MANIFOLD |
|
PRESSURE | HIGH HEAT MANIFOLD |
NOT | PRESSURE ADJUSTMENT |
MANIFOLD
PRESSURE
OUTLET ON SIDE.
GAS VALVE KNOB SHOWN IN
FIGURE 20
5 − Perform the following to both gas valves − Turn knob on gas valve 180_ either way to OFF. Do not force.
6 − Wait five minutes to clear out any gas. If you then smell gas, STOP! Immediately call your gas supplier from your neighbor’s phone. Follow the gas supplier’s instructions. If you don’t smell gas go to next step.
7 − Perform the following to both gas valves − Turn knob on gas valve 180_ either way to ON position.
8 − Replace the control access panels.
9 − Turn on all electrical power to the unit.
10 −Set the thermostat to desired setting.
11 −Both combustion air blowers will start. The burners in both heat sections will light after a
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